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Night Cooling in Condition of Czech Republic
Šíma, Jiří ; Katunský,, Dušan (referee) ; Plášek, Josef (referee) ; Šikula, Ondřej (advisor)
The PhD thesis deals with the theoretical evaluation of the potential use of night cooling techniques in condition of the Czech Republic. Mainly aims to evaluate the potential of night cooling, which uses the physical phenomenon of radiation against the night sky. This technique is widely used mainly in the dry and hot regions where there are the most suitable climatic conditions for this cooling method. The work is based on the current state of knowledge in the area of passive and low-energy cooling systems. These knowledges are applied to the conditions of Czech Republic and by using simulations of the energy, behaviour of the buildings explores the benefits in terms of improving of the internal microclimate and from the perspective of economy operation of conventional cooling equipment. In order to establish the benefits of night cooling on the operation of the building in the dynamically changing conditions, the modular simulation program TRNSYS was used, which is suitable for the analysis of energy systems of buildings and their behaviour. The results of simulation results were converted to thermal comfort parameters of the PMV and the PPD.
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Simulation of the pedestrian evacuation from the school facility
Tesař, Martin ; Plášek, Josef (referee) ; Apeltauer, Tomáš (advisor)
The Bachelor thesis is focused on basic principles of soft targets security and on threats aimed at them. Part of this thesis is about the process of an evacuation movement modeling from a grammar school building, specifically the grammar school in Brno-Řečkovice. The model of the building has been created in the Revit program and the simulation of the movement in the Pathfinder program, which is based on agent simulation technologies. As for the methodology, the thesis is a comparison of the evacuation processes under different conditions.
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Analysis of transport hub with use of simulation tools
Nikolov, Daniel ; Plášek, Josef (referee) ; Okřinová, Petra (advisor)
In 2018, the City Architect's Office prepared an idea urban design competition that outlined the direction of the overall solution of Mendl Square. The winning proposal is based on an overall change in transport organisation. The intention was therefore to plan the revitalization at the same time as the planned repair of the steam pipe, which will take place from April to September 2021. And as if fate wanted it 2021 is the anniversary of 200 years since J. G. Mendel – the founder of genetics, after whom the square is named. The aim of revitalization is to minimize the unattractiveness and dysfunction of the space. In this way, significantly change the comfortable conditions of the transfer node. The aim of this thesis is to break down critical points from the point of view of pedestrian traffic and subsequently to establish effective steps leading to their optimisation. The thesis also deals with the new Smart City field and its use for the collection of experimental data that could be used to improve input data in the creation of numerical models of public spaces.
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Static Analysis of Parts of Thermoplastic Pipe Systems
Plášek, Jan ; Kuklík,, Pavel (referee) ; prof. Ing. Alois Materna, CSc., MBA (referee) ; Kytýr, Jiří (advisor)
Thermoplastic materials have significant nonlinear behaviour. The nonlinear behaviour is described by creep curves. The curves of creep modules are dependent on stress, temperature and time. The dissertation thesis deals with the approximation of the creep modules by Prony series. Subsequently three procedures are proposed to take account of creep modules. The proposed procedures are used in two applications. The first application deals with the ring stiffness value of a corrugated sewage pipe. The ring stiffness value is influenced by the creep modulus. The other one deals with a thermoplastic flange connection. The clamping force is dependent on the creep modulus of thermoplastics. The problems were solved by ANSYS program system.
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Microscopic traffic simulation in urban areas
Bátora, Filip ; Plášek, Josef (referee) ; Apeltauer, Tomáš (advisor)
The main goal of my bachelor's thesis is to provide a theoretical insight on the topic of traffic modelling, as well as finding a practical solution to a specified issue. I will use the Aimsun software to create a microscopic model of a traffic junction using two different modes of traffic light signals. With the help of various methodical directions, I will provide an economical evaluation and comparation of the overall junction travel time.
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Analysis of indoor climate and design of heating system in the church of Holy Name of Jesus in Telc
Kovaľová, Silvia ; Plášek, Josef (referee) ; Horká, Lucie (advisor)
The aim of this bachelor‘s thesis is to analyze the microclimate and to assess and design a heating system in Jesuit Church of Holy Name of Jesus in Telc. The theoretical part describes methods of analysis of the microclimate, presents examples of analysis described in scientific articles and provides basic classification of thermometers and hygrometers. The second part includes analysis of the microclimate of the church based on data measured during the observed period. Further, it contains an assessment of the current heating system and a design of an alternative solution of the heating system. The third part, which includes drawings, processes the alternative solution of the heating system and also provides a functional scheme of the actual heating system with the engineering report.
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Heat transfer analysis of phase-change process in tubular exchanger
Fečer, Tomáš ; Bašta,, Jiří (referee) ; Kabele,, Karel (referee) ; Plášek, Josef (advisor)
The system HVAC is frequently based on cyclic phase change of boiling fluid. This phase change of boiling fluid (liquid-gas or gas-liquid) is coupled with boiling heat transfer by nucleate boiling, convective boiling and pre/post dryout effect. The nucleate boiling is depended on superheat of wall (i.e. heat flux) and presence of active nucleation sites. The two-phase convection boiling with dependence on mass flux and vapour quality is performed in liquid film between superheated wall and vapour core. The pre/post dryout effect is significant, when the liquid film is consumed and superheated wall is exposed directly to vapour core. This boiling heat transfer by nucleate boiling, convective boiling and pre/post dryout effect is simplified for engineering design on boiling heat transfer coefficient. Therefore, the dissertation thesis is aimed at experimental analysis of phase-change process in advanced engineering design.
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Pedestrian modelling inside the football stadium
Foldyna, David ; Plášek, Josef (referee) ; Apeltauer, Tomáš (advisor)
The aim of this bachelor thesis is to plot basic principles of crowd mechanisms and static and dynamic attributes of pedestrians. Further analyzing the possibilites of using computer agent models for crowd simulations and its application for pedestrian movement in the interior of football stadium, assessment of different variations of population of the stadium and statistic analysis of the results.
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Sensitivity analysis of the energy rating of buildings
Auer, Zbyněk ; Plášek, Josef (referee) ; Šikula, Ondřej (advisor)
The master´s thesis was focused on parametric computer simulations of the energy performance of buildings. The aim is to determine the sensitivity of the individual operating and climatic influences on the final energy demand of the building, which will be reflected in final form Et-curve. Parametric simulation for building energy efficiency is planned to use the BSim and ready climatic database for a specific location in place of the assessed building. The outcome of the evaluation of the real use of property in Et-curve using a custom application.
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